1. Ultra‐Wideband Multi‐Dye‐Sensitized Upconverting Nanoparticles for Information Security Application. Issue 1 (17th October 2016) Authors: Lee, Jongha; Yoo, Byeongjun; Lee, Hakyong; Cha, Gi Doo; Lee, Hee‐Su; Cho, Youngho; Kim, Sang Yeon; Seo, Hyunseon; Lee, Woongchan; Son, Donghee; Kang, Myungjoo; Kim, Hyung Min; Park, Yong Il; Hyeon, Taeghwan; Kim, Dae‐Hyeong Journal: Advanced materials Issue: Volume 29:Issue 1(2017) Page Start: n/a Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗